柠檬酸一水合物，Citric acid monohydrate [CAM]；puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, 99.5-102%

等级

ACS reagent
puriss. p.a.

质量水平

200

Agency

USP/NF
reag. ISO
reag. Ph. Eur.

测定

99.5-100.5% (calc. on anhydrous substance)
99.5-102%

形式

solid

杂质

≤0.005% insolubles in water
≤2 ppm heavy metals (as Pb)
7.5-9.0% water (Karl Fischer)

灼烧残渣

≤0.01% (as SO₄)

pKa 

(1) 3.13, (2) 4.76, (3) 6.4

痕量阴离子

chloride (Cl^-): ≤5 mg/kg
oxalate (C₂O₄^2-): ≤50 ppm
phosphate (PO₄^3-): ≤10 mg/kg
sulfate (SO₄^2-): ≤20 ppm

痕量阳离子

Ca: ≤50 mg/kg
Cu: ≤5 mg/kg
Fe: ≤3 ppm
Pb: ≤2 ppm
Zn: ≤5 mg/kg

适用性

complies for appearance of solution
complies for reaction against H₂SO₄

SMILES string

OC(CC(O)(C(O)=O)CC(O)=O)=O.O

InChI

1S/C6H8O7.H2O/c7-3(8)1-6(13,5(11)12)2-4(9)10;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);1H2

InChI key

YASYEJJMZJALEJ-UHFFFAOYSA-N

象形图

GHS07

警示用语：

Warning

危险声明

H319 - H335

预防措施声明

P261 - P264 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338

危险分类

Eye Irrit. 2 - STOT SE 3

靶器官

Respiratory system

储存分类代码

11 - Combustible Solids

WGK

WGK 1

闪点(F)

345.0 °F

闪点(C)

173.9 °C

个人防护装备

dust mask type N95 (US), Eyeshields, Gloves